Method of preparing wall covering



. r Patented Apr. 5,1 1927.

UNITED- STATES 1,623,620 PATENT OFFICE.

ALFRED C. DODMAN, JR, OF S'IIHHMII'I, NEW JERSEY.

METHOD PREPARING WALL COVERING.

K Drawing.

.My present invention relates to an improvement in wall paper, and other paper and in the method of manufacture thereof, with particular relationto a method of applying to the surface of the paper coloring.

matter economically and with desirable decorativ'e' effects.

r v The object of myinvention is to provide a method of applying color to paper to produce sti pled efi'ects, shadedefiects, or solid color e ects by means of a carrier or vehicle which is soluble or dissociated by water by sprinkling or otherwise applying the color bearing vehicle to the paper while yet in the pulp state as by sprinkling it in the powdered formonto the pulp while on the wires of a paper making machine;

} Other objects of my invention will appear from the specification and claims.

In the practice of the method of my invention I combine a color of the desired shade. etc., either mechanically or chemically with a carrier or vehicle which is soluble or dissociated by water and prepare a powder therefrom .or otherwise reducethe combination to a finely divided state. The method of re arin the color and carrier in the fine y i vide state depends of course on the nature of the carrier or of the carrier when loaded with its color. Some vehicles as a sugar, for'example are crystallized out from solution together with the color into a granular solution of carrier and color is sprayed into an atmosphere in which it is coagulated in hardened drops of small size. For a carrier or vehicle I use a dextrine, a glucose,

a sugar, gum arabic, or any suitable water onto the screen at such a distance therefrom and under such temperature .and other atmospheric conditions that the carrier will coagulate before striking the pulp. The

. solid particles of carrier and color w1ll be softened by the water of the pulp with the i result that they will adhere to the pulp and y spread in spots .or stipples which comprise state; others are abraded, ground, a ormacerated; in still other cases a heavy Application'filed September 13-, 1924; Serial No. 787,627.

a body of color held to the surface of the pulp by agglutinant. The agglutinant and color dry with the pulp when it is subjected to its drying process such as are employed and well known in the art. The amount of color added to the pulp asit passes overv the wires is varied when'shaded effects are desired. When solid colors are desired the particles are added in such numbers as will cover the paper to the desired shade of color. 05 When I desire to stipple the paper with more than one color for example I apply particles of more than one color and in amounts in accordance with the relative pro ortions :of

color desired on the aper. Sti 1 other ef- 7 -fects I obtain bymixlng the color and carrier particles with other particles such for example as particles of aluminum flake such applicaas are described in m copendin eptember tion Serial Number 73 ,628 filed 7 12, 1924 or by otherwise applying a color and the aluminum flakes. For colors I emplo any of the colors known in the art whlch are soluble in solvents suitable-for the carrier. When I load the carrier with 8d the color mechanically however it is only I necessary that the color be suspended in the solvent while the carrier is being dissolved in the solvent. It is to be understood however that other means of mixing color 5 and carrier and applying them are within the scope of my invention.

I cla1m: L

1. The method of applying color to pa er which comprises adding a carrier to a co or, on driving the carrier and color'and adding the co or and carrier in a finely divided state to the pappr pulp while on the wires of a paper ma 'n machine.

2. The met od of applying'color to paper which comprises adding a water soluble carrier to a color, drying the carrier. and color, reducing the resultant mass to afinely divided state, and applying the color and. carrier in a finely divided state to the paper pulp while on the wires of a paper making machine. 3.- The method of applying color to paper a which comprises impregnating a water soluble carrier with a color or colors, render-in said carrier into a finely divided state, an sprinkling such powder onto the paper pulp on the wires of a paper making screen., i 4. The method of ap lying color to paper which comprises sprinklm' g the color with 110 divided state onto the paper. whlle the paper in machme. Y s p is wet- 1 igned at New York in the county of 5. The method of applying a dry color New York and State of New York this 5 with a stippled effect to paper which com- 3rd day of September A. D. 1924.

prises sprinkling color impreghated water soluble carrier in a finely divided state onto ALFRED C. DODMAN J R.

a water soluble carrier in a, dr and finely the paper pulp on the wires of a paper mak- 

